The black poplar is frequently pollar'd when as big as one's arm, eight or nine foot from the ground, as they trim them in Italy, for their vines to serpent and twist on, and those they poll, or head every second year, sparing the middle, streight, and thrivingest shoot, and at the third year cut him also.

Origin

Middle English (in the sense 'head'): perhaps of Low German origin. The original sense was 'head', and hence 'an individual person among a number', from which developed the sense 'number of people ascertained by counting of heads' and then 'counting of heads or of votes' (17th century).